DOCUMENT:Q115437  26-JUL-2001  [visualc]
TITLE   :FIX: Problems Using Parentheses to Denote Array Subscripts
PRODUCT :Microsoft C Compiler
PROD/VER::1.0,1.5
OPER/SYS:
KEYWORDS:kbCompiler kbCPPonly kbVCkbbuglist kbfixlist

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft C/C++ Compiler (CL.EXE), included with:
    - Microsoft Visual C++, versions 1.0, 1.5 
    - *EDITOR Please do not choose this product*Microsoft Visual C++ 32-bit Edition* use 241, 265, 225, version 1.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

Compiling the sample code below with Visual C++ 32-bit Edition causes the
compiler to generate the following error message:

   fatal error C1001: INTERNAL COMPILER ERROR
   (compiler file 'msc1.cpp', line 602)

The compiler should instead generate the following error:

   error C2064: term does not evaluate to a function

Compiling the sample code with Visual C++, version 1.5, under Windows NT gives
the following error message:

   fatal error C1001: internal compiler error
   (compiler file 'msc1.cpp', line 585)

Again, "error C2064: term does not evaluate to a function" should display.

When the code below is compiled with Visual C++, versions 1.0 and 1.5 under
Windows 3.1, no errors are generated. The compiler effectively ignores the
erroneous line. If we compile at warning level 4 (CL /W4), the following warning
is generated:

   warning C4100: 'push_this' : unreferenced formal parameter

This warning shows that the erroneous line was ignored.

CAUSE
=====

Incorrectly compiled code uses parentheses () instead of brackets [] to denote
array subscripts.

RESOLUTION
==========

Fix the code by changing the parentheses to brackets.

STATUS
======

Microsoft has confirmed this to be a bug in the products listed at the beginning
of this article. This bug was corrected in C/C++ compiler version 9.0, included
in Visual C++ 32-bit Edition, version 2.0.

Sample Code
-----------

       // Compile options needed:    none
         #include <iostream.h>

         class stack_class {
              int stack_data[10];
              int stack_ptr;
         public:
              void init(void);
              int push(int push_this);
         };

         void stack_class::init(void) {stack_ptr = -1;};

         int stack_class::push(int push_this)
         {
              if (stack_ptr >= 99)
                   return(0);

              //ERROR: (++stack_ptr) - Change to [++stack_ptr]
              stack_data(++stack_ptr) = push_this;
                   return(1);
         };

         void main()
         {
              stack_class stack;

              stack.push(100);
         }

Additional query words: 1.00 1.50 8.00 8.00c

======================================================================
Keywords          : kbCompiler kbCPPonly kbVC kbbuglist kbfixlist
Technology        : kbVCsearch kbAudDeveloper kbCVCComp
Version           : :1.0,1.5
Issue type        : kbbug
Solution Type     : kbfix

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